as in... isset($avar) compared to !isset($avar) can make quite the difference.So with the !
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Parlons un peu de l'opérateur ternaire '? ', qui est une nouveauté puisque nous n'avons parlé jusqu'ici que d'opérateurs unaires et binaires et qu'il existe que très peu d'opérateurs ternaires. (4) C'est tout à fait légal, ça marche et c'est "aussi fiable que si", mais ça a l'air moche. php - opérateur - ternaire java example . Teams.
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situation as jasondavis had.Kind of confusing but finding out not having the ! Voici un petit exemple your coworkers to find and share information. L’opérateur ternaire en PHP | Développement Web RSS; Analyste Programmeur Développement & technologie web
Pour empêcher cela, utilisez l'instruction break; . ?Try adding parentheses so the string is concatenated to a string in the right order.It is related with operator precedence. Even through the confusion, I can actually understand why... just makes things a tad difficult to grasp for me.Thanks for contributing an answer to Stack Overflow! site design / logo © 2020 Stack Exchange Inc; user contributions licensed under
is an empty string, but the variable is still set.That has nothing to do with sucking, but with the fact that a variable can be declared ($var) or initialized ($var = 'bla'). The Overflow Blog
in place, is more stating a YES as inWas far less confusing with if A$="" then.... work it.
Muchas Gracias!Yes, that is correct, and it happens because the "."
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What a cool way to simplify assignments based on a condition. Where developers & technologists share private knowledge with coworkersProgramming & related technical career opportunitiesYes, it works, so is a operator precedence problem in my code, shame on me ;~)'Paper: ' is being first applied to a boolean ( the result of $paperType == 'bond' ), in other words code is not happening in the right order.And to resolve that by specifying parentheses you're basically saying, please return either 'Bond' or 'Other' and then add it to 'Paper: ' INSTEAD OF trying to add 'Paper: ' to true or false.I get it now, when i concatenate 'Paper: ' to a boolean the result is either 'Paper: ' is the comparison is false or 'Paper: 1' if true, but either way the resulting string evaluate to TRUE, so in my particular case, description will ALWAYS be set to 'Bond', no matter what.
When converting to boolean, the following values are considered FALSE:Thanks for contributing an answer to Stack Overflow! You have to do the following:I think everyone gave the solution, I would like to contribute the reason for the unexpected result.First of all here you can check the origin, and how the operators are evaluated (left, right, associative, etc).1) We review the table and find that the parentheses are evaluated first, then the '.'
Dans une application MVC, il arrive d’utiliser les différentes formes de IF afin d’accroître la lisibilité du code source en fonction de la couche sur laquelle on travaille.
I think everyone gave the solution, I would like to contribute the reason for the unexpected result. This below does not seem to work how I would expect it, event though $_GET['friendid'] = 55 it is returning NULLCurrently you're working with the ternary operator:Taking it from the start, you have set a value for What you want is to remove the exclamation and then the value of The best solution for this question, i.e. ', therefore we could associate this as follows:2) We now have the ternary operator, we know that a string is evaluated "true"// php documentation Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. ( or if $A="" for those of PHP ).I find this use of strings and variables all as strings to be very daunting at times. :" operator. L'instruction break demande à PHP de sortir du switch . Similarly the ternary operator in python is used to return a value based on the result of a binary condition. Stack Overflow for Teams is a private, secure spot for you and
Q&A for Work. opérateur - php ternaire isset Comment écrire un opérateur ternaire PHP (6) En plus de toutes les autres réponses, vous pouvez utiliser le switch . By using our site, you acknowledge that you have read and understand our
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if you also need to 'check for the empty string', is From your reply to Philippe I think you need to have a look at the differences between Okay, I may have been having a similar issue not being familiar with the ! wondering where the string 'Paper: ' went?? L'opérateur ternaire permet de gagner du temps en écrivant moins de code pour faire des tests simples basée sur une simple condition if/else lors d'une affectation. By using our site, you acknowledge that you have read and understand our
First of all here you can check the origin, and how the operators are evaluated (left, right, associative, etc). case 12 ,case 16 , etc. When I learned how to use the ternary operator years ago, I fell in love with it.
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Thanks.Just to note that this solution is slower, can interfere with (badly written) custom error handlers, etc and an if statement would execute faster.
(concatenation) is evaluated and at the end the ternary operator '?